2-bromo-1-(2,3,4,5,6-pentafluorophenyl)ethanone

Conditions: temp:25.01; pressure:0.00; stir:; See reaction.notes.procedure_details.

Procedure: A mixture of 1-(2,3,4,5,6-pentafluorophenyl)-2-bromo-1-ethanone 5.00 g, ammonium thiocyanate 1.58 g and acetonitrile 100 mL was stirred at 25° C. for one hour. To the reaction mixtures was added aqueous saturated sodium bicarbonate solution and the mixtures were extracted with ethyl acetate. The organic layers were washed with aqueous saturated sodium bicarbonate solution and were dried over anhydrous sodium sulfate. The resulting mixtures were concentrated under reduced pressure to give 1-(2,3,4,5,6-pentafluorophenyl)-2-thiocyanato-1-ethanone. To the reaction mixtures the mixtures were extracted with ethyl acetate The organic layers were washed with aqueous saturated sodium bicarbonate solution were dried over anhydrous sodium sulfate The resulting mixtures were concentrated under reduced pressure

Conditions: temp:25.01; pressure:0.00; stir:; See reaction.notes.procedure_details.

Procedure: A mixture of 1-(2,3,4,5,6-pentafluorophenyl)-2-bromo-1-ethanone 5.00 g, ammonium thiocyanate 1.58 g and acetonitrile 100 mL was stirred at 25° C. for one hour. To the reaction mixtures was added aqueous saturated sodium bicarbonate solution and the mixtures were extracted with ethyl acetate. The organic layers were washed with aqueous saturated sodium bicarbonate solution and were dried over anhydrous sodium sulfate. The resulting mixtures were concentrated under reduced pressure to give 1-(2,3,4,5,6-pentafluorophenyl)-2-thiocyanato-1-ethanone. To the reaction mixtures the mixtures were extracted with ethyl acetate The organic layers were washed with aqueous saturated sodium bicarbonate solution were dried over anhydrous sodium sulfate The resulting mixtures were concentrated under reduced pressure

Conditions: temp:0.00; pressure:0.00; stir:; See reaction.notes.procedure_details.

Procedure: In the same manner as in Example 28, methyl 4-thiocarbamoylbenzoate was reacted with 2,3,4,5,6-pentafluorophenacyl bromide to obtain methyl 4-[4-(2,3,4,5,6-pentafluorophenyl)-2-thiazolyl]benzoate. The product was recrystallized from ethanol. Yield: 60%. Pale yellow prisms. Melting point: 141 to 142° C.

Conditions: temp:25.01; pressure:0.00; stir:; See reaction.notes.procedure_details.

Procedure: A mixture of 1-(2,3,4,5,6-pentafluorophenyl)-2-bromo-1-ethanone 5.00 g, ammonium thiocyanate 1.58 g and acetonitrile 100 mL was stirred at 25° C. for one hour. To the reaction mixtures was added aqueous saturated sodium bicarbonate solution and the mixtures were extracted with ethyl acetate. The organic layers were washed with aqueous saturated sodium bicarbonate solution and were dried over anhydrous sodium sulfate. The resulting mixtures were concentrated under reduced pressure to give 1-(2,3,4,5,6-pentafluorophenyl)-2-thiocyanato-1-ethanone. To the reaction mixtures the mixtures were extracted with ethyl acetate The organic layers were washed with aqueous saturated sodium bicarbonate solution were dried over anhydrous sodium sulfate The resulting mixtures were concentrated under reduced pressure